Feeding mechanism for sewing-machines.



J. ERGER, JR. FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED MAB. 19,1903.

1,124,198, N Patented Jan. 5, 1915.

lllllllllllllllll v 55 5% STATES, PATENT OFFICE.

508m BERGER, JB., OFIITICA, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, '10

UNION SPECIAL MACHINE COMPANY, A CORPORATION OF. ILLINOIS.

mamas.

Specification of Letters Patent.

Patented J an. 5, 1915.

(Primal application ,flled August 4, 1802, Serial No. 118,236. Divided and this application filed March 19,

To all whom it may concern:

Be it known that I, JosnPH BERGER, Jr., a citizen of the United States, residing 1n "Utica, county of Oneida, and State of New An :object of this invention is to provide a feeding mechanism which is capable of feeding twe pieces of different kinds of goods, or the same kind of goods, at the same time at different relative speeds.

Another object of this invention is to provide -a feeding mechanism capable of either gathering or stretching either of two pieces of goodsrelativel @ther objects oi this invention will appear during the course of this description.

The invention consists in the elements, features and combinations hereinafter described and claimed.

In the drawings: Figure 1 is a top plan of my feeding mechanism, those parts only being shown which are related to my invention}? 'Fi 2 is a vertical sect-ion of Fig. 1 on thel-me2-2; Fig. 3 is a similar view on the line 3-3 of Fig. 1; Fig. A: is a plan of a section of the throat-plate showing the form and arrangement of the feed-dogs; Fig. 5 is a similar view showin another form and arrangement of the eed-dogs;

' Fig. 6 is-a view similar to Fig. 3, showing a slight modification of the invention.

Qiily so much of the machine or parts are shown as aredeemed necessary to illustrate my invention.

One form of my invention is shown in Figs. 1,2 and 3, in which 1, is the rockingframe, pivoted to the bed-plate 2, of the machine, such frame. deriving its movements through any suitable connection 3, with the driving shaft 4, including the usual means posed bar 13,

1903. Serial No. 148,511. I I

5, for regulating its rocking movement. The feed-bar 6, horizontally disposed, is pivoted, or j ournaled at its rear endto the upper end of'the rocking frame 1, at 7; and at its for- Ward end said bar has suitably secured thereto a .feed dog 8 provided with teeth 9, as usual. On its under side, the feed-bar is provided with an angular piece 10, between which and the body of the bar an actuating eccentric, or cam 11, on the driving shaft is embraced for imparting vertical move- .ments. Between its ends, the rocking-frame has secured thereto, in any suitable manner, a bracket-piece 12, carrying a vertically disprovided with a number of perforations 14, for the reception of a screw 15, carried by one endof an adjustable link 16, having its opposite end adjustably secured in like manner in any one of a series of perforations 17, in a similar bar 18, suitably secured to a feed-bar 19, supported and guided in bearings 20, carried by the feed-bar 6. The feed-bar 19, is free to slide longitudinally on the bar 6 and independently thereof, but is confined by its guides so as to partake of the vertical movements of said feed bar 6; the bar 19, at its forward end, carries a feed dog 21 having teeth 22. The link 16, forms the driving connection between the rocking-frame 1, and the bar 19, and as said link is adjustable on the bars 13, and 18, the amount of movement transmitted from the rocking frame to the feed-bar 19 can be regulated and varied according to the character of work to be performed or the results desired. Obviously, longitudinal slots instead of apertures may be provided in the bars 13, and 18, for the adjustments; and it will be clear that the dog 21 can be caused to feed fast or slow according to the position of the link 16, along the bars 13, and 18, and that its movement may be in excess of the movement of the feed-bar 6, by placing the link 16, above the pivotal connection of the rocking-frame with the bar 6 as shown in Fig. 3, or may be the same as, or as much less than, the movement of said bar 6, as desired, by adjusting said link 16, along said bars 13 and 18, see Fig. 2.

It will be clear from the above description that the speed of the feed-dogs may be changed relatively, and that the forward dog may be caused to move faster or slower than 'the rear-dog, this depending upon the character of the work to be performed, or the results desired, or the necessities of the conditions caused by the character of the work operated upon. Moreover, it will be clear from Fig. 2 of the drawing that when the bar 18 is secured to the feed bar so as to extend at right angles thereto, the feed dog 21 will be maintained in the same position relative to the needle for various adjustments of the link 16, for the reason that the bar 13 is substantially vertical when the feed bar is nearest the needle. This is not always desirable and is undesirable in certain conditions and in operating upon certain kinds of work, such as in feeding edgings of open-work character, or in bar stitching, when it becomes necessary to have the feed-dog operate as closely to the needle as possible. To provide for this, the bar 18, may be secured to the feed-bar 19, at an inclination, or obtuse-angle, in which case as the link is lowered along the bars 13 and 18, the dog 21, will be moved toward the needle, as clearly shown in Fig. 3, thus enabling said dog to work close to the needle and engage the edging and advance the same with certainty.

The feed-dogs may be of any desired shape and size and may have any desired relation to each other, such shape and relation depending entirely upon the character of work operated upon or the results or effects desired. In Fig. i, the rear-dog 9, is shown broad and extending to the outer edge of the forward dog 21, the latter being narrow and lying in front of the rear dog 9. in Fig. 5, the dog 34:, is shown narrow and long, and the rear-dog 35, much shorter than the other dog and lying in a plane parallel with the latter but in front thereof. The particular shapes and arrangements herein shown are merely illustrative of modes of carrying out the spirit of my invention and are not intended, in any sense, as limitations; for it will be clear that many changes in shape and arrangement of parts can be made without departing from the principles of my invention.

From the above description and the illustration afforded by the drawings, it will be clear that adjustments may be made to cause the forward dog to feed either faster or slower than the rear dog; or the latter may be given a speed of travel the same as the forward-dog or faster or slower than the latter.- The relative speed of the dogs depends upon the character of work operated upon; and this is true also of the size and shape of the dogs and the relative disposition thereof. For example, in binding a garment, or sewing edging to fabric, around other.

curved edges, it is important to feed the binding or edging faster than the garment or fabric soas to produce neat, smooth work and avoid puckering the one relatively tov the other 4 Another use of my invention is in puckering or gathering one piece of work on or relatively to another, this being accom; nlished by feeding the piece to be gathered faster than the other; or one piece of work nection with the feed, such as shown my application filed August 4th, 1902, Serial Nc..ll8,236, of which this case is a division. For the sake ofclearness in terminology,

and for-convenience, =1 denominate the feed dog which engages the fabric ahead of the.

needle, as the auxiliar feed dog, and the other feed dog which. eeds' away the goods after the stitching, as the main feed'dog.

The feed bars supporting the respective dogs are also named as auxiliary and main feedbars.

Having thus I claim and desire to secure by Letters Pat'- ent is:

1. in a feeding mechanism, the combination of a main and anauxiliary feed-bar; means for actuating said feed-bars for imparting the feed movements thereto includ-. ing a rocking-frame directly connected to one of said feed-bars, and mechanism connecting said rocking-frame and the other feed-bar; said mechanism including a bodily adjustable member for regulating-the'action .of the feeding mechanism whereby either feed-bar may be caused to travel faster than the other.

2. In a feeding mechanism, the' combination of a main and an auxiliary feed bar, means for actuating said feed bars for imparting the feed movements thereto, including a rocking frame directly connected to the auxiliary feed bar, and mechanism connecting said rocking frame and the.. main feed bar, said mechanism including a bodily adjustable link for regulating the action of the feeding mechanism whereby either feed bar may be causedto travel faster than the- 3. In a feeding mechanism, the combina-I tion of a main and auxiliary feed bar, means described my invention what I for simultaneously raising and lowering said feed bars, means for imparting feeding movements to said feed bars, including a rocking frame directly connected to one of said feed bars, a substantially Vertical bar directly and rigidly connected to the other feed bar, a second substantially vertical bar directly and rigidly connected to said rocking frame, and a link adjustably connected to said vertical bars.

In testimony whereof I have hereunto signed my name in the presence of two sub- 10 scribing Witnesses.

JOSEPH BERGER, JR.

Witnesses: 1 HENRY M. LOVE, WILLIAM B. Knox. 

